平方

Both of the ESD were proportional to kVp 2.2 to kVp 2.5 and were linear proportion to mAs. Inverse square law exists in the relationship of focus-film distance, FFD, and ESD. The impacts of field size and patient thickness to ESD are negligible. Optimized operating condition is chosen to improve the diagnosis rate and to reduce the patient dose. The ESD, 0.12±0.06 mGy, performing the optimized operating condition of chest x-ray examinations, is less than both values of reference doses recommended by NRPB and IAEA.

研究结果发现，入射表面剂量随操作条件而变，以相同的条件照射，三相位X光机所造成表面剂量大约是单相位X光机的1.9倍；入射表面剂量与kVp的2.2至2.5次方成比例，与mAs约成线性正比，与焦斑至底片距离的关系大约符合平方反比定律；照野面积及身体厚度虽会影响表面剂量的大小，但其程度远低於kVp及mAs的影响。

In college,my friends and i came up with an inverse-square law.

大学时 我和朋友想到了一条平方反比定律

Sir Isaac Newton's magnificent "inverse-square law" is correct in the calculation of magnitude.

牛顿爵士辉煌的"平方反比定律"对力的大小的计算是正确的。

The idea of an inverse-square law of gravitational force acting on the planets was in the air around Newton's time.

认为作用于行星的是平方反比定律的引力，这种看法在牛顿时代很流行。

Sir Newton's magnificent "inverse-square law" is the brilliant achievement of his own time and the famous formula is still glittering the talent rays on the interplanetary exploration, in the field of calculation.

牛顿的辉煌的"平方反比定律"是他那个时代的卓越成就，其著名的公式至今仍在计算方面闪耀着天才的光芒，照亮了行星际空间的探索。

He would give a book worth 40 shillings to anyone who could deduce Kepler's laws from the inverse-square law.

Christopher Wren打赌如果有人能用平方反比定律推论开普勒定律，他就会将一本价值40先令的书送给这个人。

The intensity of light from any source varies inversely as the square of the distance from the source.

从各光源发出的光的强度与该光源的距离的平方成反比。

The special field owning 1500 squares makes a workshop building,the carpenter group,ironworker group,art designer group,electrician form corresponding forming a complete set.

拥有1000平方的专业制作厂房，木工组，铁工组，美工组，电工组相应配套。

Anchor points based Isometric Embedding under least square error criterion has a time complexity of O n log( n , and after obtained geodesic distances it has linear time complexity for embedded points and can be fully realized in parallel.

基于锚点集的最小平方误差等距嵌入算法AIE具有O n log( n 的时间复杂性，而且在获得测地线距离后的计算时间复杂度达到对嵌入点数的线性关系，且可以完全并行实现。

The paper proposes two new dimension reduction algorithms: The First is On the Expected Distortion Bound of Direct Random Projection. The second is Anchor points based Isometric Embedding under least square error criterion. On the Expected Distortion Bound of Direct Random Projection has a time complexity of O.

本文分别提出了两种新的维数约减算法：(1)基于期望扰动的直接随机映像算法On the Expected Distortion Bound of Direct Random Projection，简称DRP(2基于锚点集的最小平方误差等距嵌入算法(Anchor points based Isometric Embedding under least square error criterion，简称AIE)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。